38138143 has 2 divisors, whose sum is σ = 38138144. Its totient is φ = 38138142.

The previous prime is 38138141. The next prime is 38138167. The reversal of 38138143 is 34183183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38138143 - 2¹ = 38138141 is a prime.

Together with 38138141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38138141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19069071 + 19069072.

It is an arithmetic number, because the mean of its divisors is an integer number (19069072).

Almost surely, 2^38138143 is an apocalyptic number.

38138143 is a deficient number, since it is larger than the sum of its proper divisors (1).

38138143 is an equidigital number, since it uses as much as digits as its factorization.

38138143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 38138143 is about 6175.6087149365. The cubic root of 38138143 is about 336.6044456896.

The spelling of 38138143 in words is "thirty-eight million, one hundred thirty-eight thousand, one hundred forty-three".